Stocks/Funds/CIK 1729212

Port Capital LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1729212
Assets
$2.25B
+2.0% YoY
Holdings
82
Lifetime alpha vs market
+0.19% annual
Average hold time
5.8 yr
median 7.3 yr

Quarterly history

Cum return +181% vs S&P +177% · α +4% lifetimeAUM $2.2B · peak $2.4BFlow $-109M (-5%)2017-122019-032020-062021-092022-122024-032025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-4.01%
trims when stocks drop
when a holding falls −10%+
Middle response
-2.67%
baseline attrition
Rally response
+0.77%
adds into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
RBCRBC Bearings Incorporate$187M8.3%+68.8%8.5 yr
HEI-AHEICO Corporation$174M7.8%8.5 yr
TDYTeledyne Technologies In$152M6.7%+21.6%8.5 yr
APHAmphenol Corporation$103M4.6%+93.6%8.5 yr
AMEAMETEK, Inc.$93M4.1%+25.3%8.5 yr
SPXCSPX Technologies, Inc.$92M4.1%+55.3%2.5 yr
ORLYO'Reilly Automotive, Inc$87M3.9%-3.4%8.5 yr
LINLinde plc$85M3.8%+7.9%3.3 yr
RLIRLI Corp.$79M3.5%-26.0%8.5 yr
GGGGraco Inc.$78M3.4%+2.7%8.5 yr
PHParker-Hannifin Corporat$76M3.4%+48.6%2.5 yr
WTSWatts Water Technologies$75M3.3%+43.4%2.8 yr
SSDSimpson Manufacturing Co$70M3.1%+9.8%7.0 yr
ICEIntercontinental Exchang$58M2.6%-7.8%8.5 yr
CACICACI International Inc$56M2.5%+48.2%3.3 yr

Portfolio composition (YoY)

Industry mix
Industrial - Machinery17.0%+6.1pp$381M
Hardware, Equipment & Parts11.3%+3.1pp$255M
Manufacturing - Tools & Accessories8.3%+3.2pp$187M
Aerospace & Defense7.8%-0.3pp$174M
Insurance - Property & Casualty7.2%-5.8pp$161M
Chemicals - Specialty5.5%+0.4pp$123M
Financial - Credit Services5.0%+0.5pp$113M
Specialty Business Services4.4%-0.8pp$99M
Electrical Equipment & Parts4.1%+0.5pp$93M
Specialty Retail3.9%-0.7pp$88M
Country
US90.3%-1.2pp
GB3.8%+0.1pp
BM2.2%-0.6pp
Unknown2.0%+0.0pp
IE1.7%+1.7pp
BR0.0%+0.0pp
Top 5: 31.5% · Top 10: 50.2% · Top 25: 85.5%

Winners

TickerPrev $PnLYoY %
RBC$114M+0.08B68.8%
APH$84M+0.08B93.6%
SPXC$51M+0.03B55.3%
TDY$97M+0.02B21.6%
CACI$43M+0.02B48.2%

Losers

TickerPrev $PnLYoY %
CPRT$79M-0.03B-41.3%
RLI$123M-0.03B-26.0%
PGR$97M-0.02B-25.5%
KNSL$52M-0.02B-29.7%
V$39M-0.01B-13.1%

Top buys this quarter · 15

AXP American Express Company+$19M
MDLN Medline Inc.new+$13M
DGII Digi International Inc.new+$12M
TDY Teledyne Technologies Incorpor+$9M
ETN Eaton Corporation plc+$8M
ORI Old Republic International Cor+$6M
GGG Graco Inc.+$4M
SHW The Sherwin-Williams Company+$4M
ATMU Atmus Filtration Technologies +$2M
CPRT Copart, Inc.+$50M

Top sells this quarter · 15

SPGI S&P Global Inc.$21M
BRO Brown & Brown, Inc.exit$18M
ADP Automatic Data Processing, Incexit$15M
APH Amphenol Corporation$15M
RBC RBC Bearings Incorporated$166M
UNH UnitedHealth Group Incorporateexit$8M
ACGL Arch Capital Group Ltd.$6M
MA Mastercard Incorporated$6M
PGR The Progressive Corporation$4M
AME AMETEK, Inc.$4M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$2.25B82+10.26%+17.59%-7.33%-0.11B
2025-12-31$2.32B82+9.46%+17.72%-8.26%-0.08B
2025-09-30$2.40B84+7.70%+17.52%-9.82%-0.04B
2025-06-30$2.35B85+14.19%+14.94%-0.75%+0.04B
2025-03-31$2.21B87+4.26%+8.30%-4.05%-0.01B
2024-12-31$2.19B88+12.91%+24.89%-11.97%-0.00B
2024-09-30$2.23B87+28.15%+36.04%-7.89%+0.04B
2024-06-30$2.00B85+16.60%+24.49%-7.89%+0.09B
2024-03-31$1.99B87+27.28%+29.62%-2.34%+0.03B
2023-12-31$1.79B89+23.93%+26.18%-2.25%+0.01B
2023-09-30$1.60B80+26.57%+21.57%+5.00%-0.06B
2023-06-30$1.66B80+23.47%+19.42%+4.04%+0.05B
2023-03-31$1.54B71+5.62%-7.82%+13.44%+0.07B
2022-12-31$1.38B68-5.37%-18.17%+12.81%-0.02B
2022-09-30$1.23B69-7.68%-15.51%+7.83%-0.01B
2022-06-30$1.28B71-4.74%-10.62%+5.88%-0.02B